I'm trying to write some Hbase test cases in python using the thrift client.  I'm having trouble figuring out how to convert the Hbase values (byte arrays) into their original form, a Long.

While we're at it, I'm sure I'll need to convert in the other direction at some point (long to byte array)

Thanks!

You probably want to use the "struct" module:

In [3]: struct.unpack(">q", "\x00\x00\x00\x00\x00\x00\x00\x05")
Out[3]: (5,)
In [4]: struct.pack(">q", 5)
Out[4]: '\x00\x00\x00\x00\x00\x00\x00\x05'

On Wed, Dec 7, 2011 at 1:20 PM, Allan Spiegel <[EMAIL PROTECTED]> wrote:
>
> I'm trying to write some Hbase test cases in python using the thrift client.  I'm having trouble figuring out how to convert the Hbase values (byte arrays) into their original form, a Long.
>
> While we're at it, I'm sure I'll need to convert in the other direction at some point (long to byte array)
>
> Thanks!

--
Todd Lipcon
Software Engineer, Cloudera

Did you see Mozilla's HBase Thrift client?

http://code.google.com/p/socorro/source/browse/trunk/socorro/hbase/?r=1763

Lars

On Dec 7, 2011, at 22:20, Allan Spiegel <[EMAIL PROTECTED]> wrote:

>
> I'm trying to write some Hbase test cases in python using the thrift client.  I'm having trouble figuring out how to convert the Hbase values (byte arrays) into their original form, a Long.
>
> While we're at it, I'm sure I'll need to convert in the other direction at some point (long to byte array)
>
> Thanks!

Thanks that works.

--Allan

-----Original Message-----
From: Todd Lipcon [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 07, 2011 4:28 PM
To: [EMAIL PROTECTED]
Subject: Re: convert Hbase byte array to long in python?

You probably want to use the "struct" module:

In [3]: struct.unpack(">q", "\x00\x00\x00\x00\x00\x00\x00\x05")
Out[3]: (5,)
In [4]: struct.pack(">q", 5)
Out[4]: '\x00\x00\x00\x00\x00\x00\x00\x05'

On Wed, Dec 7, 2011 at 1:20 PM, Allan Spiegel <[EMAIL PROTECTED]> wrote:
>
> I'm trying to write some Hbase test cases in python using the thrift client.  I'm having trouble figuring out how to convert the Hbase values (byte arrays) into their original form, a Long.
>
> While we're at it, I'm sure I'll need to convert in the other direction at some point (long to byte array)
>
> Thanks!

--
Todd Lipcon
Software Engineer, Cloudera